scholarly journals Scientific-methodical and practical principles for assessment of the key territories of the Eastern Podillya's econetwork based on the main criteria of their formation

Author(s):  
О. V. Mudrak ◽  
G. V. Mudrak ◽  
A. L. Shcherbliuk

 The article presents scientific-methodical and practical principles for assessment of key territories of the ecological network of Eastern Podillya based on the main criteria of their formation. It offers the system of appropriate approaches and principles to be applied for formation of the key territories of the region's ecological network. The principle of representativeness should serve as a main criterion for selection of the key territories, however, we still advise to consider three types of such territories – biotic (botanical, zoological, mycological); geographical (landscape; biogeographical); geozoological (object; categorical; functional). Such aspects as area, size, configuration, state of internal ecological balance should play a significant role in creating the key territories, however, the qualitative and quantitative composition of protected objects, degree of anthropogenic impact on natural and man-made ecosystems and types of conservation regimes are also extremely important. Matrix representativeness, which is widely used in EU countries, should be also of great importance in forming a network of key territories. It is based on the landscape-zonal principle, where the systems of natural zoning units (biogeographical, geobotanical, floristic, forest typological, zoogeographical, physical-geographical) form the matrix of biodiversity species and landscapes. According to this principle, the basis for creation of key territories should by all means include typical (indicator) species of biodiversity, landscapes of all natural zones, subzones, regions, provinces, sub-provinces, districts. The field surveys of Eastern Podillya led us to a conclusion that a significant number of key territories do not perform a function of preserving biotic and landscape diversity. The conducted field researches allowed establishing the fact that there is a risk of losing such diversity under current ecological conditions of the region. Therefore, using the principle of representativeness, we presented a method of assessing the key territories of the Eastern Podillya's ecological network based on the main criteria of their formation. The main criteria include degree of naturalness of a certain key territory, its floristic and faunistic significance, landscape-coenotic and specific (relating to species) representativeness, purpose of a key territory, and its protected status (regime).

2019 ◽  
Vol 9 (4) ◽  
pp. 732-737
Author(s):  
O. V. Mudrak ◽  
G. F. Mazur ◽  
K. H. Herasymiuk ◽  
H. V. Mudrak ◽  
H. S. Tarasenko

The article deals with environmental management of the objects and territories of the Eastern Podillya Nature Reserve in the structure of the regional ecological network from the standpoint of physical and geographical zoning. A system of approaches and principles is proposed, which should be used when forming a network of protected objects. The main criterion for the selection of these objects should be the principle of representativeness, while it is advisable to take into account their three types - biotic (botanical; zoological; mycological); geographical (landscape; biogeographic); geosozological (objective; categorical; functional). The area, its size, configuration, state of internal ecological equilibrium, he qualitative and quantitative composition of the protected objects, the degree of anthropogenic impact and the types of conservation regimes play an important role in the creation of the protected objects. But also, of great importance in forming a network of protected objects is the matrix representation, which is widely used in EU countries. The basis is the landscape-zonal principle, where the matrix of biodiversity and landscapes are systems of units of natural areas (biogeographical, geobotanical, floristic, zoogeographic, physical and geographical). According to this principle, the creation of protected objects must be represented by typical (indicator) species of biodiversity, landscapes of all natural zones, subzones, regions, provinces, sub-provinces, districts. On-site surveys of the Eastern Podillya have found that a large proportion of protected sites do not fulfill the function of biodiversity and landscape diversity. The conducted field studies have shown that in the present ecological conditions of the region there is a risk of loss of this diversity. Therefore, using the principle of representativeness, we propose to optimize the nature reserve fund of Eastern Podillya from the point of view of physical and geographical zoning.


1998 ◽  
Vol 74 (2) ◽  
pp. 241-248 ◽  
Author(s):  
Margaret A. McLaren ◽  
Ian D. Thompson ◽  
James A. Baker

Part of a recently advocated method of sustainable forest development employs indicator species as fine filters to assess changes within ecosystems and landscapes. We used a series of criteria based on biology, sampling methods, and legal or particular status to select vertebrate indicator species for the province of Ontario. The criteria for selection were applied in a hierarchical manner, with species ecology given primary importance, followed by sampling considerations, and status criteria. The latter represented certain societal weightings and political or featured management concerns. Species fitting the selection criteria were placed in a four-dimensional matrix (with axes: broad habitat type, age class, trophic level, and spatial scale), and species were then chosen from among the matrix cells. The exercise reduced the total vertebrate species in two forest biomes (Boreal and Great-Lakes St. Lawrence) to a relative few, from which the final choices were made primarily based on expert opinion. In Ontario, the species selected as indicators of biological diversity will be used to test the underlying general hypothesis that forest management has no effect on species richness and species abundance, or the distribution of species in time and space.


2021 ◽  
Vol 3 (1) ◽  
pp. 099-103
Author(s):  
M. V. Vasina ◽  
◽  
A. S. GOLYSH ◽  
K. V. TROFIMENKO ◽  
◽  
...  

This work consists of the characteristics of production, assessment of the qualitative and quantitative composition of water, consideration of the process of water purification in the chemical shop, comparison and selection of coagulants and flocculants, and demonstration of the most affordable technology used at the CHPP which increases the efficiency of source water purification. The problem of pretreatment of the source water has always been relevant. The quality of the water used depends on the operation of boilers and turbines at the CHPP. The paper presents the average annual indicators of the quality of the source water, pre-treatment methods, and considers which reagents that do not require the cost of reconstruction of clarifiers can improve their performance. The initial water after the application of the test samples of coagulants and flocculants was studied. Conclusions are drawn about the work of clarifiers after the use of the proposed reagents.


2020 ◽  
Vol 24 (8) ◽  
pp. 829-835
Author(s):  
A. V. Kushnareva ◽  
Т. V. Shelengа ◽  
I. N. Perchuk ◽  
G. P. Egorova ◽  
L. L. Malyshev ◽  
...  

Narrow-leaved lupine (Lupinus аngustifolius L.) is a widely cultivated leguminous forage and green manure crop with a potential for human nutrition. However, the presence of secondary metabolites – alkaloids – in lupine seeds considerably affects the quality of raw produce, reducing its nutritive value; in addition, high concentrations of alkaloids are toxic to humans and animals. Therefore, plant breeders working with lupine need to gain knowledge about the variability of alkaloid content in seeds of different genotypes and search for the sources of their low concentrations in the crop’s gene pool. The collection of narrow-leaved lupine genetic resources held by the N.I. Vavilov Institute of Plant Genetic Resources (VIR) offers wide opportunities for such search by means of mass screening. For its part, largescale gene pool screening requires the selection of an optimal technique to measure alkaloid content in seeds, so that it would be easily reproducible and as little labor-, time- and fund-consuming as possible. The results of the search for such method are presented. Qualitative and quantitative indices were compared when target compounds had been extracted with multicomponent mixtures and individual reagents (chloroform, methanol, etc.) and the extracts analyzed using gas chromatography-mass spectrometry. High-performance liquid chromatography combined with mass spectrometry was also employed. Five major alkaloids were found to be present in all types of extracts: lupanine, 13-hydroxylupanine (dominant ones), angustifoline, sparteine, and isolupanine. The fullest extraction of alkaloids was observed when the extractant with an added alkaline agent was used (425 mg/100 g). The lowest level of extraction was registered with chloroform (216 mg/100 g). The significance of the differences was confirmed statistically.


2020 ◽  
pp. 157-166
Author(s):  
Nina N. Gorlova

    Among the methods used, the most effective, from the point of view of the quality of cleaning from the main harmful substances, is catalytic neutralization. The effectiveness of using this method is largely determined by the properties and characteristics of the used catalytic material. Selection of the appropriate composition determines the provision of physical, physico-mechanical and corrosive properties of the used catalytic materials. In this regard, the possibilities of using steel oxide and molding clay as basic components in the charge of the material were studied. In order to reduce the cost of the treatment system, the possibility of replacing valuable expensive components with ore mills of the appropriate composition was considered.As a result of the studies, the optimal qualitative and quantitative composition of the charge of the catalytic material was determined.


2020 ◽  
pp. 409-432
Author(s):  
Oskar Kubrak ◽  
Paulina Kubrak ◽  
Mkrtich H. Zardaryan

During the last years of Emperor Trajan’s reign, the Legio IV Scythica was stationed in the capital of Armenia at that time, Artaxata. It had made its way there within the scope of the Roman campaign against the Parthians. Its presence was immortalised on stamped rooftiles, bricks and a monumental inscription discovered by the southern border of the present-day village of Pokr Vedi. The inscription carved into limestone confirms the building activities of the Roman army. Similar inscriptions were frequently placed on the gates and most important buildings in legionary camps. Polish and Armenian archaeologists undertook a joint search for the supposed camp of the Fourth Scythian Legion in the vicinity of the present-day village of Pokr Vedi, where the above-mentioned construction inscription had been found. The field surveys conducted within the framework of the Pokr Vedi Project were mainly of a non-invasive character. The following were applied: surface prospection, aerial photography, interviews with the inhabitants, scanning of part of the terrain and geophysical measurements done using two methods: electrical resistivity and magnetic measurements. The accumulated data enabled the selection of sites in which survey trenches were located


2021 ◽  
Vol 11 (12) ◽  
pp. 5570
Author(s):  
Binbin Wang ◽  
Jingze Liu ◽  
Zhifu Cao ◽  
Dahai Zhang ◽  
Dong Jiang

Based on the fixed interface component mode synthesis, a multiple and multi-level substructure method for the modeling of complex structures is proposed in this paper. Firstly, the residual structure is selected according to the structural characteristics of the assembled complex structure. Secondly, according to the assembly relationship, the parts assembled with the residual structure are divided into a group of substructures, which are named the first-level substructure, the parts assembled with the first-level substructure are divided into a second-level substructure, and consequently the multi-level substructure model is established. Next, the substructures are dynamically condensed and assembled on the boundary of the residual structure. Finally, the substructure system matrix, which is replicated from the matrix of repeated physical geometry, is obtained by preserving the main modes and the constrained modes and the system matrix of the last level of the substructure is assembled to the upper level of the substructure, one level up, until it is assembled in the residual structure. In this paper, an assembly structure with three panels and a gear box is adopted to verify the method by simulation and a rotor is used to experimentally verify the method. The results show that the proposed multiple and multi-level substructure modeling method is not unique to the selection of residual structures, and different classification methods do not affect the calculation accuracy. The selection of 50% external nodes can further improve the analysis efficiency while ensuring the calculation accuracy.


Marine Policy ◽  
2018 ◽  
Vol 88 ◽  
pp. 11-22 ◽  
Author(s):  
Stephen J. Newman ◽  
Joshua I. Brown ◽  
David V. Fairclough ◽  
Brent S. Wise ◽  
Lynda M. Bellchambers ◽  
...  

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